What is the state of on-chip flash memory when LSI starts in boot mode?

Question:

What is the state of the on-chip flash memory (flash ROM and data flash) when starting the LSI in boot mode?

Answer:

In boot mode, the user mat, user boot MAT, and the data MAT in the data flash are all erased immediately after the LSI is started.
The erased data is transferred to the block number H'FF in the flash ROM, and becomes undefined value in the data flash.